Tsab ntawv xov xwm no tsom mus rau kev sib koom kev lag luam- cov kev daws teeb meem tshwj xeeb thiab tiag- ntiaj teb kev tsim kho vaj tsev cov ntaub ntawv kev tshawb fawb rau cov peev txheej-raws li rov qab siv cov rov qab osmosis concentrate thiab ion pauv hloov dej.
Koj puas tau pom tias yuav luag tag nrho cov chaw tsim khoom nrog cov dej ntshiab sib xyaw ua ke tsim ob hom teeb meem dej khib nyiab: RO mloog zoo tsis tu ncua tawm ntawm qhov rov qab osmosis system thiab acid / alkali regeneration pov tseg kua tsim tawm thaum lub sij hawm rov tsim dua ntawm cation / cation bed / mixed bed systems? Nyob rau hauv xyoo tas los, cov kev cai ib puag ncig tau lax, thiab cov tuam txhab lag luam tuaj yeem ua rau nruab nrab thiab dilute nws ua ntej tso tawm ncaj qha. Tam sim no, nrog kev tswj xyuas cov dej khib nyiab nruj dua thiab qhov yuav tsum tau ntsuas ntawm cov dej khib nyiab rov qab siv dua, kev tso tawm ncaj qha yog qhov ua tsis tau. Txawm li cas los xij, kev nqis peev siab thiab kev saib xyuas cov nqi ntawm kev ua tiav evaporation thiab crystallization tshuab ua rau nws nyuaj rau cov tuam txhab feem ntau kom txhawb nqa mus ntev.
Ntau lub tuam txhab nyiam mus rau qhov kawg thaum cuam tshuam nrog ob hom dej no, xa mus rau tag nrho cov evaporation lossis ncaj qha xa rov qab mus rau pem hauv ntej - kawg membrane system yam tsis muaj kev kho. Qhov no ua rau muaj kev cuam tshuam ntawm kev ua tsis tiav hauv ob lossis peb lub hlis, suav nrog kev sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, qhov loj - ntsuas qhov ntsuas kub hauv cov khoom siv hluav taws xob, thiab txo qis cov dej kub sib txawv. Qhov tseeb, ob hom dej khib nyiab no tsis tas yuav tsum tau muab pov tseg. Nrog rau kev sib cais kom raug, kev npaj ua ntej, thiab qhov chaw siv rov qab zoo sib xws, lawv tuaj yeem txo cov nqi dej tshiab thiab cov dej phwj tuaj, thaum tseem txo qhov ntsuas qhov kawg - ntawm - yeeb nkab evaporation thiab tsim pov tseg pov tseg. Tsab ntawv xov xwm no, siv cov phiaj xwm nthuav qhia pej xeem los ntawm tsib lub lag luam loj-thermal fais fab, thee chemical, photovoltaic semiconductor, thee mining, thiab steel- piav qhia meej txog cov teeb meem dej tsis zoo, txoj hauv kev rov siv tau, cov txheej txheem ua kom tiav, thiab cov ntsiab lus tseem ceeb kom tsis txhob muaj kev cuam tshuam ntawm qhov chaw.{10}
I. Qhia meej txog cov peev txheej thiab cov teeb meem tseem ceeb ntawm kev rov siv dua rau ob hom dej khib nyiab
1. Ua kom pom tseeb los ntawm Reverse Osmosis Membrane Treatment System
Tsis tu ncua tsom los ntawm cov dej ntshiab huv thiab thawj / theem nrab RO systems rau cov dej khib nyiab rov qab siv dua, cov dej no feem ntau suav txog 20% -30% ntawm cov khoom muaj txiaj ntsig qub.
Cov yam ntxwv zoo ntawm cov dej: Muaj cov calcium thiab magnesium hardness, silicate, sulfate, thiab ntsev; TDS feem ntau nyob ntawm 5000-25000 mg / L. Silica thiab hardness yooj yim tsim nyuaj - mus rau - ntxuav nplai txheej. Cov txheej txheem scale inhibitors tsuas tuaj yeem txo cov nag lossis daus hauv lub sijhawm luv luv thiab tsis tuaj yeem cuam tshuam qhov kev pheej hmoo ntawm kev ntsuas lub sijhawm ntev. Kev lag luam kev lag luam tsis meej: ncaj qha recirculating cov dej nyoos rau rov siv dua ua rau raug kaw - lub voj voog ntawm cov ntsev thiab silica, ua rau ob npaug ntawm cov kab mob hauv lub cev ntxuav thiab xav tau tshuaj tua kab mob offline txhua 3-6 lub hlis, ua rau lub neej luv luv ntawm daim nyias nyias.
2. Ion Exchange Resin Regeneration Wastewater
Tsim los ntawm boiler feedwater, cation txauv txaj acid ntxuav, anion pauv txaj alkaline ntxuav, thiab sib xyaw txaj synchronous regeneration nyob rau hauv ultrapure dej noj, qhov no yog intermittent wastewater nrog heev fluctuating dej zoo.
Cov yam ntxwv zoo ntawm cov dej: Cov acidity thiab alkalinity heev thaum lub sij hawm rov tsim dua tshiab; acid ntxuav dej khib nyiab muaj pH ntawm 1-3, thiab alkaline ntxuav dej khib nyiab muaj pH ntawm 11-14. Txawm tias tom qab neutralization, cov ntsev cov ntsiab lus tseem siab, nqa ntau cov calcium thiab magnesium ions, silicates, thiab cov khib nyiab tawg. Ntau qhov haujlwm tsuas yog ua kom yooj yim nruab nrab thiab pH hloov kho, hla cov txheej txheem softening thiab silica tshem tawm thiab rov siv cov dej ncaj qha. Qhov no ua rau kom ceev ceev ntawm cov tawv silica nplai ntawm cov dej ntws thiab cov phab ntsa sab hauv ntawm cov desulfurization ntauwd, uas yog qhov nyuaj rau tshem tawm nrog cov kua qaub ntxuav.
Ob hom dej khib nyiab sib koom ua ib qho teeb meem tseem ceeb: salinity siab, siab scaling ions, thiab kev hloov pauv loj hauv dej zoo. Ib qho tseem ceeb ua ntej yuav siv tau ruaj khov yog homogenization, buffering, thiab pretreatment nrog softening thiab silica tshem tawm. Kev tshem tawm cov kauj ruam ua ntej no ua rau txhua qhov kev npaj rov siv dua tsuas yog kho ib ntus xwb.
II. Txoj Cai Tswjfwm Ntiag Tug: Tsib Lub Chaw Lag Luam no muaj qhov siab tshaj plaws ntawm cov dej khib nyiab rov qab siv dua tshiab
Tam sim no, cov chaw tiv thaiv ib puag ncig thiab kev txuag dej muaj cov kev cai nruj tshaj plaws ntawm qhov yuav tsum tau rov qab siv dua thiab ze rau - xoom tso tawm ntawm RO concentrate thiab resin regeneration water wastewater. Cov kev lag luam tsib no tau pom ntau qhov kev nthuav qhia pej xeem tau siv thiab sawv cev rau thaj chaw uas xav tau ntau tshaj plaws rau kev hloov kho thev naus laus zis hauv ob xyoos dhau los:
1. Thermal Power Generation Industry
Thermal fais fab nroj tsuag yog cov khoom siv dej loj. Cov kev cai tam sim no feem ntau xav tau cov dej rov siv dua tsis pub tsawg dua 95% hauv thaj chaw cog, thiab loj - nplai ncaj qha tso tawm cov dej khib nyiab desulfurization, cov tshuaj dej rov tsim cov dej khib nyiab, thiab RO mloog zoo yog txwv tsis pub. Fais fab nroj tsuag cia siab rau ion pauv los npaj boiler feedwater, stably tsim kua qaub thiab alkali regeneration dej khib nyiab txhua hnub; circulating dej thiab ultrafiltration / thim rov qab osmosis tsis tu ncua tso cov dej khib nyiab, nrog rau cov nroj tsuag desulfurization ntauwd, thee yard spray, thiab circulating dej txias ua cov ntsiab lus pov tseg.
Kev Tshawb Fawb Kev Lag Luam: Ib qho dej -txuag kev ua qauv qhia kev kho dua tshiab rau 600MW thee- hluav taws xob hluav taws xob hluav taws xob nyob rau sab hnub tuaj ntug dej hiav txwv Tuam Tshoj. Tag nrho cov nroj tsuag RO mloog zoo thiab ion txauv txaj regeneration dej yog sau sib cais hauv cov pas dej sib cais. Acid thiab alkali rov tsim cov dej khib nyiab ua ntej nkag mus rau hauv lub tank homogenization rau kev hloov pH tsis siv neeg, thiab tom qab ntawd xa mus rau cov txiv qaub-magnesium ntsev softening thiab silica tshem tawm system nrog rau RO mloog zoo. Kev kho qis-turbidity, qis- cov khoom ntsev dej tau muab faib ua ob txoj kab: ib qho yog siv los ua cov dej pleev xim rau kev ua kom txias, thiab siab - ntsev tailwater yog xa mus rau lub desulfurization system raws li cov txheej txheem pleev xim. Cov nroj tsuag tau tshem tawm tag nrho cov chaw tso tawm ncaj qha rau kev mloog zoo, txo qhov kev yuav khoom ntawm ntau pua txhiab tons ntawm cov dej tshiab txhua xyoo. Cov txheej txheem cuam tshuam yog suav nrog hauv cov ntaub ntawv ntawm cascade siv tshuab ntawm cov dej khib nyiab hauv kev lag luam fais fab.
2. Coal Chemical and Coal Mine Water Treatment Industry
Thawj cov dej hauv av hauv cov chaw siv hluav taws xob thiab cov mining muaj cov silica siab thiab cov qib hardness, thiab cov dej rov qab ua kom muaj zog ntau ntawm RO concentrate. Cov ion txauv regeneration cov dej khib nyiab los ntawm boiler desalination units muaj ntsev thiab silicate concentration. Feem ntau cov thee- cov chaw tsim khoom yog nyob hauv dej- thaj chaw tsis tshua muaj, thiab cov kev ntsuas dej hauv cheeb tsam tau txiav txim ze rau - xoom cov dej pov tseg. Kev cia siab ib leeg ntawm evaporation thiab crystallization yog kim heev, ua cascaded rov qab siv cov ntsiab lus tseem ceeb hauv kev lag luam. Kev Lag Luam Case Study: Lub tuam txhab thee chemical hauv Northwest Energy Base tsim tawm kwv yees li 1000 m³ ntawm RO mloog zoo thiab cov dej rov ua dua tshiab txhua hnub. Thaum pib, tag nrho cov no tau raug xa mus rau MVR evaporation, uas ua rau tus nqi khiav lag luam ncaj qha ntawm ntau dua 18 yuan ib tuj ntawm cov concentrate tom qab membrane concentration. Tom qab ntawd, ib chav pretreatment tau ntxiv, suav nrog homogenization txias, txiv qaub-magnesium ntsev softening thiab silica tshem tawm, thiab ultrafiltration. Cov purified qis- cov dej ntsev yog rov qab siv rau cov dej txias thiab txau hauv qhov chaw ua haujlwm gasification. Tsuas yog ib qho me me ntawm ultra-siab salinity hauv qab ntws concentrate yog xa mus rau evaporation thiab crystallization. Qhov no txo qis tag nrho cov evaporation load los ntawm 70%, txuag ntau lab yuan nyob rau hauv reagent, hluav taws xob, thiab tu nqi txhua xyoo. Lub kaw lus tau ua haujlwm ruaj khov rau ntau dua 12 lub hlis yam tsis muaj silica nplai thaiv. Cov txheej txheem zoo sib xws tau nce thiab nce qib hauv ntau qhov chaw ua haujlwm thee chemical hauv Ningdong thiab Ordos.
Ib qhov loj - nplai mine qhov dej kho qhov dej hauv Ordos ua ke ua ntej kho cov dej hauv kuv, RO concentrate, thiab softening resin regeneration water wastewater. Cov dej kho tau rov qab siv dua rau hauv av hauv av tiv thaiv kev txau thiab cov dej ntws tawm ntawm cov dej txias, txo qis kev siv cov dej lag luam. Qhov project no tau raug xaiv los ua ib qho xwm txheej ntawm kev txuag dej hauv zos.
3. Photovoltaic thiab Semiconductor Electronics Manufacturing Industry
Silicon wafer txiav thiab chip manufacturing yuav tsum muaj kev txuas ntxiv ntawm cov dej loj loj - ntws ultrapure dej, ua rau muaj qhov loj - nplai ntau lawm ntawm thawj qhov rov qab osmosis concentrate. Qhov chaw nres tsheb dej ntshiab qhov sib xyaw ua ke-txoj hauv txaj tau dhau los ua ntu zus, thiab cov kua qaub thiab alkali rov tsim cov dej khib nyiab yog qhov ruaj khov. Raws li "Photovoltaic Manufacturing Industry Standard Conditions (2024 Edition)," tshiab tsim thiab nthuav silicon wafer thiab roj teeb tsim muaj peev xwm yuav tsum muaj kev siv dej rov siv dua li ntawm 40%, thiab cov dej num polysilicon yuav tsum muaj cov dej rov siv dua tsis pub tsawg dua 98%. Tus nqi ntawm kev yuav cov kais dej tawm sab nraud ntawm cov nroj tsuag yog qhov siab, ua rau cov tuam txhab ua haujlwm txhawb nqa kaw - voj voog cov dej khib nyiab rov qab siv dua.
Cov Ntaub Ntawv Kev Lag Luam: Ib txoj haujlwm txhawb nqa dej ultrapure nyob rau hauv ib qho kev sib koom ua ke hauv Circuit Court tsim chaw ua si hauv cheeb tsam Yangtze River Delta tsim cov RO ntau ntau los ntawm kev npaj dej ultrapure. Cov resin acid thiab alkali regeneration dej yog sau cais nyob rau hauv lub pas dej ua ke, neutralized, homogenized, thiab pretreated ua ntej yuav rov qab siv nyob rau hauv theem. Tsawg- cov dej ntsev ntsev tau rov qab mus rau pem hauv ntej - kawg txheej txheem pretreatment ntawm qhov chaw nres tsheb dej ntshiab, thaum qhov seem siab - cov dej ntsev ntsev yog siv rau hauv pem teb ntxhua khaub ncaws thiab tso pa tawm ntauwd ntxiv. Qhov no txo cov kais dej txhua xyoo los ntawm ntau tshaj 200,000 tons, txo qhov zaus ntawm offline membrane cov khoom tu los ntawm 60%, thiab tiv thaiv ultrafiltration fouling tshwm sim los ntawm kev xa rov qab ncaj qha ntawm siab -silicon concentrate. Lub 5GW monocrystalline silicon manufacturing cog nyob rau sab hnub tuaj Tuam Tshoj siv cov dej khib nyiab uas RO mloog zoo los ntawm silicon wafer tu thiab softening regeneration cov dej khib nyiab yog coagulated kom tshem tawm colloidal silicon ua ntej yuav rov qab siv dua nyob rau hauv lub rhiav txias system. Tag nrho cov dej khib nyiab rov qab siv dua yog ntau dua 75%, ib txhij txo tag nrho cov khoom pov tseg phom sij. Cov thev naus laus zis no tau muab tso rau hauv cov txheej txheem photovoltaic wastewater kho cov txheej txheem siv.
4. Kev lag luam hlau
Cov chaw tsim khoom hlau txuas ntxiv tsim ob lub kwj deg siab -cov dej qab ntsev los ntawm lawv cov dej ntws thiab cov chaw demineralization. Lub Tsev Haujlwm Saib Xyuas Kev Lag Luam thiab Cov Ntaub Ntawv Technology tshaj tawm cov xwm txheej ntawm cov dej khib nyiab rov ua dua tshiab txhua xyoo. Ntau lub tuam txhab steel cia siab rau cov qib thiab qib rov qab siv dua ntawm kev mloog zoo, ua tiav cov dej rov qab siv dua 98% thiab txo qhov ntsuas qhov kawg - ntawm - cov kav dej evaporation.
Blast furnace slag flushing, cov ntaub ntawv khaws cia plua plav, thiab desulfurization systems nyob rau hauv cov nroj tsuag muaj siab kam rau dej zoo, ua rau lawv zoo tagnrho cov chaw rau kev ua kom mloog zoo thiab rov tsim cov dej khib nyiab.
5. Chemical Industrial Parks
Chemical industrial parks yog tus cwj pwm los ntawm kev ua haujlwm siab ntawm kev lag luam thiab kev tswj hwm nruj ntawm tag nrho cov dej khib nyiab. Ntau qhov chaw tau siv cov chaw siv dej khib nyiab hauv nruab nrab los khaws thiab kho RO mloog zoo thiab rov tsim cov dej khib nyiab los ntawm ntau lub tuam txhab hauv lub tiaj ua si. Tom qab ntawd cov dej huv huv tau muab faib rau cov tuam txhab cov dej ntws thiab cov plua plav tshem tawm cov tshuab. Qhov kev kho mob hauv nruab nrab no txo tus nqi ntawm kev txhim kho ib tus neeg cov nroj tsuag thiab suav nrog hauv Ministry of Industry thiab Information Technology's 2025 pom zoo cov txheej txheem thev naus laus zis rau kev txuag dej.
III. Ob Hom Kev Ua Raws Cai thiab Kev Siv Cov Dej Ncua Dej, Muab faib ua Tsawg-Tus Nqi, Kev Siv Rov Siv Dua ntau thiab siab- qauv, Refined Reuse
(I) Tsawg-Tus nqi, Kev siv rov qab ntau dua: Ua ntej rau kev hloov kho cov nroj tsuag qub, kev nqis peev ua ntej tsawg kawg
1. Coal Yards, Raw Material Yards, thiab Txoj Kev Plua Plav Txhaj Tshuaj Txhaum Cai: Yam tsawg kawg nkaus rau cov ntsuas dej zoo; tsuas yog neutralization, homogenization, thiab tshem tawm cov khoom me me loj yog xav tau. Loj - teev pov tseg ntawm qhov siab - cov dej ntsev ntsev yog ua tau yam tsis muaj kev pheej hmoo ntawm kev ntsuas cov khoom siv hluav taws xob.
2. Boiler Flue Gas Desulfurization System Makeup Dej: Lub desulfurization slurry nws tus kheej ua siab ntev ntawm siab - ntsev thiab siab -silica dej, ua rau nws yog qhov zoo tshaj plaws channel rau thermal hwj chim thiab thee tshuaj nroj tsuag kom zom cov concentrated wastewater thiab regenerate cov dej khib nyiab.
3. Cog Pem Teb Ntxuav thiab Greenery Irrigation: Tsuas yog tag nrho cov ntsev thiab cov ntsiab lus hlau hnyav yuav tsum tau tswj kom tau raws li cov qauv; tsawg load thiab yooj yim kev khiav hauj lwm thiab txij nkawm.
(II) High-tus qauv, refined water reuse yuav tsum ua kom tiav softening thiab silica tshem tawm pretreatment.
1. Cov dej txias ua kom dej pleev xim dej: Qhov no muaj cov dej siab tshaj plaws -txuag cov txiaj ntsig, txo qis tag nrho cov dej tshiab tau kos. Raws li GB / T 50050-2017 "Design Code for Industrial Circulating Cooling Water Treatment," hardness thiab tag nrho cov silica theem yuav tsum nruj me ntsis tswj kom tsis txhob scaling thiab corrosion ntawm txias yees thiab kub exchangers.
2. Cov dej pleev xim rau ntawm theem pretreatment ntawm greywater thiab cov chaw dej ntshiab: Tsuas yog pretreated qis -cov dej huv ntsev raug tso cai rov siv dua; txwv tsis pub siv cov dej uas tsis muaj purified concentrated ncaj qha.
3. Kev tsim cov cua txias ncig pleev dej hauv photovoltaic thiab tshuaj rhiav: nruj tswj ntawm colloidal silica thiab tshem tawm cov khib nyiab yuav tsum tau; ib chav pom yuav tsum tau muab ntsia rau pem hauv ntej kawg kom cuam tshuam flocs.
IV. Ob txoj kev paub tab thiab ua tiav txoj hauv kev, hloov tau rau cov peev txheej sib txawv thiab kev xav tau ib puag ncig
Kev daws 1: Simplified Graded Reuse (Rau kev kho cov nroj tsuag uas twb muaj lawm, kev siv nyiaj tsawg, thiab tsis nrhiav kev rov siv dua)
Cov txheej txheem ntws: RO concentrate tank + resin regeneration dej khib nyiab sib cais tank → Homogenization thiab neutralization hloov tank (tsis siv neeg nruab nrab ntawm cov kua qaub thiab alkali cov dej khib nyiab, stabilizing pH ntau 6-9) → Coagulation, softening, thiab silica tshem tawm (ib txhij ntxiv ntawm txiv qaub thiab magnesium oxide tshem tawm ib txhij), yaj thiab silica silica. → Quartz xuab zeb pom + ultrafiltration → Cov dej ntshiab rov siv lub tank
Diversion Logic: Tsawg- dej ntsev ntshiab tom qab pom tau muab rau cov dej ntws thiab desulfurization ntauwd; ib qho me me ntawm ultra-siab salinity sludge concentrate yog xa mus rau evaporation thiab crystallization.
Tsim nyog Scenario: Thermal fais fab nroj tsuag, thee mines, tsoos tshuaj nroj tsuag; Cov dej tank uas twb muaj lawm tuaj yeem kho dua tshiab, kev nqis peev tsawg, thiab kev ua haujlwm yooj yim txhua hnub thiab kev saib xyuas.
Core Control Parameters: Cov tshuaj tiv thaiv Softening pH stabilizes ntawm 10.1–10.3; tag nrho cov silica nyob rau hauv kev kho effluent Tsawg dua los yog sib npaug rau 10mg / L, tag nrho hardness Tsawg dua los yog sib npaug rau 50mg / L, ua tau raws li cov qauv rau ntev - lub sij hawm ruaj khov ntawm cov dej circulating.
Kev daws 2: Siab -Txoj Kev Siv Tag Nrho (Xero Discharge, Crystallized Salt Resource Utilization Project)
Txheej Txheem Flow: Ob qhov dej khib nyiab sau hauv ib lub pas dej → Loj -muaj peev xwm ntau-media homogenization thiab sib npaug tank → Txiv qaub-magnesium ntsev softening thiab sedimentation rau silica tshem tawm → Integrated tubular membrane pom kom khaws silica flocs tob 3 → theem RO dej system; concentrate xa mus rau MVR evaporation thiab ntsev sib cais.
Tsim nyog Scenarios: Photovoltaic, semiconductor, thiab tshiab tsim thee chemical industrial parks yuav tsum tau nyob ze -zero wastewater discharge thiab crystalline ntsev raws li industrial ntsev export qauv.
Cov txiaj ntsig tseem ceeb: Tubular daim nyias nyias ib txhij khaws cov colloidal silica thiab hardness flocs, ua kom muaj kev ruaj ntseg ntawm tag nrho cov silica nyob rau hauv cov effluent hauv qab no 5 mg / L, tsis txhob downstream evaporation, yellowing ntawm crystalline ntsev, thiab substandard purity.
V. Tsib qhov yuam kev tuag 90% ntawm Reclaimed Water Projects poob rau hauv
1. Neutralizing pH yam tsis tau tshem tawm hardness thiab silica ua ntej ncaj qha rov qab mus rau circulating dej thiab desulfurization yees
Reclaimed dej thiab RO concentrates muaj siab concentrations silica thiab hardness. Tsuas yog kho pH tsis tuaj yeem tshem tawm cov nplai ions. Long-term operation leads to dense silica scale forming on the heat exchanger tube walls and desulfurization tower inner walls, which is difficult to remove with conventional acid washing. Downtime tu nqi deb tshaj qhov pretreatment peev.
2. Rov qab tag nrho cov dej sib tov mus rau RO pem hauv ntej kawg yam tsis muaj kev sib cais
ntsev thiab silica accumulates infinitely nyob rau hauv lub system. Lub siab sib txawv ua ob npaug kwv yees li txhua peb lub hlis ntawm kev ua haujlwm ntawm daim nyias nyias, uas ua rau muaj kev tu offline ntau zaus thiab ua rau cov nqi hloov pauv ntau ntxiv.
3. Kev cia siab ib leeg ntawm cov nplai inhibitors es tsis txhob pretreatment rau silica tshem tawm
Scale inhibitors tuaj yeem ncua sijhawm ib ntus silica nag lossis daus. Lawv cov nyhuv inhibitory yuav ua tsis tau zoo tom qab qhov concentration piv ntau tshaj peb zaug. Lawv tsis tuaj yeem txo cov ntsiab lus silica hauv dej ntawm nws qhov chaw; lawv tsuas yog ib ntus alleviate scaling, tsis daws qhov teeb meem.
4. Instantaneous centralized paug ntawm resin regeneration wastewater yam tsis muaj ib tug buffer equalization tank.
Resin regeneration muaj feem cuam tshuam cov dej khib nyiab. Luv -lub sij hawm acid/alkali thiab salinity shocks lub pretreatment system, ua rau imbalances nyob rau hauv reagent ntau npaum thiab muaj peev xwm hloov pauv ntawm silica thiab hardness tshem tawm efficiency, ua rau inconsistent effluent zoo.
5. Kev tsim kho qhov muag tsis pom kev tag nrho - muaj peev xwm evaporation system thaum tsis quav ntsej cov qib rov qab siv los txo cov load.
Kev noj ncaj qha rau tag nrho cov dej khib nyiab thiab cov dej rov ua dua tshiab rau hauv chav tsev evaporation ua rau cov nqi siab rau hluav taws xob, reagents, thiab sludge pov tseg. Cov dej num feem ntau tuaj yeem rov siv 60% -70% ntawm lawv cov dej khib nyiab ntawm tus nqi qis hauv kev sib tw, tsuas yog ib qho me me ntawm qhov siab heev -cov dej qab ntsev concentrated cov dej khib nyiab yuav tsum tau kho evaporation.
VI. Ntev -Lub Sij Hawm Muaj Kev Ruaj Ntseg Rov Siv Dua Kev Tswj (General rau Engineering Tsim thiab niaj hnub ua haujlwm thiab tu)
Txhua qhov ntsuas tau ua raws li cov qauv hauv tebchaws tam sim no thiab kev lag luam engineering specifications, thiab tuaj yeem siv ncaj qha rau ntawm -site:
1. Rov siv dua rau cov dej txias txias (GB/T 50050-2017): Tag nrho cov silicon Tsawg dua lossis sib npaug li 20 mg/L, tag nrho hardness Tsawg dua lossis sib npaug li 80 mg/L (xws li CaCO₃), TDS Tsawg dua lossis sib npaug li 3000 mg/L;
2. Rov siv dua rau desulfurization txau thiab tshem tawm cov plua plav hauv cov chaw cia khoom: Tag nrho cov silicon Tsawg dua lossis sib npaug li 50 mg / L, tsis muaj kev txwv nruj;
3. Recycled pure water station pretreatment front end: Tag nrho silicon Tsawg dua los yog sib npaug li 5 mg/L, tshem tawm cov khib nyiab <1 mg/L;
4. Kev soj ntsuam raws sij hawm: Kev ntsuam xyuas txhua hnub ntawm tag nrho cov silicon, tag nrho hardness, thiab conductivity ntawm recycled dej huv; kev kuaj txhua lub limtiam ntawm raw cov ntsiab lus thiab rov tsim cov dej khib nyiab rau txhua qhov dej tsis zoo; cov cuab yeej ceeb toom ntxov online raug teeb tsa; tsis siv neeg hloov mus rau evaporation system thaum dej zoo tshaj cov qauv; rov siv cov dej tsis tsim nyog hauv cov chav tsim khoom raug txwv.
VII. Cov ntsiab lus luv luv
Rov qab osmosis concentrate thiab ion exchange regeneration wastewater tsis yog ib puag ncig lub nra, tab sis theej reclaimed cov dej nrog cov nqi rov ua dua. Lub tsib lub lag luam loj ntawm thermal fais fab, thee tshuaj, photovoltaic semiconductor, thee mining, thiab steel, txwv tsis pub los ntawm ob txoj cai tswj kev txuag dej thiab cov nqi siv dej, tau pom ntau tshaj plaws ntawm cov concentrated reuse technology upgrade project nyob rau hauv ob xyoos dhau los. Ntau qhov kev ua yeeb yam rau pej xeem tau lees paub txoj hauv kev zoo tshaj plaws: ua qhov tseem ceeb ntawm kev rov qab siv dua qub thiab dav dav ntawm feem ntau ntawm cov dej ntim, ua ke nrog softening thiab silica tshem tawm pretreatment kom tshem tawm cov kev pheej hmoo ntawm scaling, thiab xa tsuas yog me me ntawm ultra-siab salinity residue rau evaporation thiab crystallization, txo cov nqi ua haujlwm ib puag ncig, thiab kev ua haujlwm ib puag ncig. tsim kev puas tsuaj pov tseg-ib qho txiaj ntsig triple.
Nyob rau hauv -qhov chaw xyaum, nco ntsoov ob lub hauv paus ntsiab lus: Ua ntej, lub neej ntev rau kev ua haujlwm ruaj khov yog kev tshem tawm thaum ntxov ntawm silica thiab hardness; tsuas yog neutralizing pH yog tantamount los tsim ntev - lub sij hawm scaling txaus ntshai. Thib ob, rov siv dua ntawm cov qauv qis dua thaum twg ua tau, thiab tsis txhob xa tag nrho nws mus rau evaporation. Txo qhov ntim ntawm siab - tus nqi kawg- ntawm - kev kho cov yeeb nkab los ntawm qhov chaw yog qhov kev daws teeb meem zoo tshaj plaws uas sib npaug cov txiaj ntsig kev lag luam thiab kev xav tau ib puag ncig.